Revert "Add incremental RST-to-MyST swap mechanism (#1857)" (#1892)

This reverts commit 4b36114e053ee11d0cb264a1e4cfe4692d78f194.

1 files changed, 0 insertions, 327 deletions

diff --git a/scripts/swap_sources.py b/scripts/swap_sources.py
deleted file mode 100644
index 683d5ef9..00000000
--- a/scripts/swap_sources.py
+++ /dev/null
@@ -1,327 +0,0 @@
-#!/usr/bin/env python3
-"""swap_sources.py — Pre-build swap/restore for incremental RST-to-MyST migration.
-
-Usage
------
-  python scripts/swap_sources.py --swap          # rename md-{name}.md → {name}.md
-  python scripts/swap_sources.py --restore       # undo renames
-  python scripts/swap_sources.py --dry-run       # show what would be swapped
-  python scripts/swap_sources.py --status        # show current swap state
-  python scripts/swap_sources.py --swap --docs-dir /path/to/docs
-
-Swap list
----------
-  docs/_swap.txt — one stem per line, relative to docs/, comments (#) skipped.
-  Example:
-      # migrated pages
-      configuration/firewall/zone
-      quick-start
-
-State files (in docs/_build/, gitignored)
------------------------------------------
-  _swap_state.json  — records completed renames
-  _swap_exclude.txt — RST paths to pass to Sphinx exclude_patterns
-"""
-
-import argparse
-import json
-import os
-import sys
-from pathlib import Path
-
-
-# ---------------------------------------------------------------------------
-# Constants
-# ---------------------------------------------------------------------------
-
-STATE_FILE = "_swap_state.json"
-EXCLUDE_FILE = "_swap_exclude.txt"
-SWAP_LIST_FILE = "_swap.txt"
-STATE_VERSION = 1
-
-
-# ---------------------------------------------------------------------------
-# Core helpers
-# ---------------------------------------------------------------------------
-
-def parse_swap_list(path: Path) -> list:
-    """Read *path* and return a list of stems (comments/blanks skipped).
-
-    Returns [] if the file does not exist.
-    """
-    if not path.exists():
-        return []
-    stems = []
-    for line in path.read_text(encoding="utf-8").splitlines():
-        stripped = line.strip()
-        if stripped and not stripped.startswith("#"):
-            stems.append(stripped)
-    return stems
-
-
-def _build_dir(docs_dir: Path) -> Path:
-    build = docs_dir / "_build"
-    build.mkdir(parents=True, exist_ok=True)
-    return build
-
-
-def _state_path(docs_dir: Path) -> Path:
-    return docs_dir / "_build" / STATE_FILE
-
-
-def _exclude_path(docs_dir: Path) -> Path:
-    return docs_dir / "_build" / EXCLUDE_FILE
-
-
-def _resolve_stem_paths(docs_dir: Path, stem: str):
-    """Return (md_from, md_to, rst_path) as absolute Paths for a given stem."""
-    p = Path(stem)
-    name = p.name
-    parent = p.parent  # may be PosixPath('.')
-    if str(parent) == ".":
-        target_dir = docs_dir
-    else:
-        target_dir = docs_dir / parent
-
-    md_from = target_dir / f"md-{name}.md"    # source: md-prefixed
-    md_to = target_dir / f"{name}.md"          # destination: plain .md
-    rst_path = target_dir / f"{name}.rst"      # RST that will be excluded
-    return md_from, md_to, rst_path
-
-
-# ---------------------------------------------------------------------------
-# do_swap
-# ---------------------------------------------------------------------------
-
-def do_swap(docs_dir: Path) -> None:
-    """Rename md-{name}.md → {name}.md for each stem in _swap.txt.
-
-    Validates collisions, records state, writes exclude file.
-    Rolls back all completed renames on any failure.
-    """
-    docs_dir = Path(docs_dir)
-    swap_list = parse_swap_list(docs_dir / SWAP_LIST_FILE)
-    if not swap_list:
-        print("swap_sources: no stems in swap list, nothing to do.", file=sys.stderr)
-        return
-
-    # Stale state: warn and auto-restore first
-    state_path = _state_path(docs_dir)
-    if state_path.exists():
-        print(
-            "swap_sources: WARNING — stale swap state detected. Auto-restoring before new swap.",
-            file=sys.stderr,
-        )
-        do_restore(docs_dir)
-
-    # Validate all stems before touching the filesystem
-    planned = []  # list of (md_from, md_to, rst_path, stem)
-    for stem in swap_list:
-        md_from, md_to, rst_path = _resolve_stem_paths(docs_dir, stem)
-
-        if not md_from.exists():
-            print(
-                f"swap_sources: skipping {stem!r} — md- source file not found: {md_from}",
-                file=sys.stderr,
-            )
-            continue
-
-        if not rst_path.exists():
-            print(
-                f"swap_sources: skipping {stem!r} — RST file not found: {rst_path}",
-                file=sys.stderr,
-            )
-            continue
-
-        if md_to.exists():
-            raise RuntimeError(
-                f"collision: both RST and unprefixed .md exist for stem {stem!r}. "
-                f"Remove {md_to} before swapping."
-            )
-
-        planned.append((md_from, md_to, rst_path, stem))
-
-    # Execute renames with rollback on failure
-    completed = []  # list of (md_from, md_to) that succeeded
-    try:
-        for md_from, md_to, rst_path, stem in planned:
-            os.rename(md_from, md_to)
-            completed.append((md_from, md_to))
-    except Exception as exc:
-        # Rollback completed renames in reverse order
-        for from_path, to_path in reversed(completed):
-            try:
-                os.rename(to_path, from_path)
-            except Exception as rollback_exc:
-                print(
-                    f"swap_sources: ROLLBACK ERROR for {to_path}: {rollback_exc}",
-                    file=sys.stderr,
-                )
-        raise RuntimeError(f"swap_sources: rename failed, rolled back. Cause: {exc}") from exc
-
-    if not completed:
-        return
-
-    # Build state and exclude data using relative paths (relative to docs_dir)
-    _build_dir(docs_dir)
-    swaps = []
-    exclude_lines = []
-    for md_from, md_to, rst_path, stem in planned:
-        rel_from = md_from.relative_to(docs_dir)
-        rel_to = md_to.relative_to(docs_dir)
-        rel_rst = rst_path.relative_to(docs_dir)
-        swaps.append({
-            "stem": stem,
-            "md_from": str(rel_from),
-            "md_to": str(rel_to),
-            "rst_excluded": str(rel_rst),
-        })
-        exclude_lines.append(str(rel_rst))
-
-    state = {"version": STATE_VERSION, "swaps": swaps}
-    state_path.write_text(json.dumps(state, indent=2), encoding="utf-8")
-    _exclude_path(docs_dir).write_text("\n".join(exclude_lines) + "\n", encoding="utf-8")
-
-    print(f"swap_sources: swapped {len(completed)} file(s).", file=sys.stderr)
-
-
-# ---------------------------------------------------------------------------
-# do_restore
-# ---------------------------------------------------------------------------
-
-def do_restore(docs_dir: Path) -> None:
-    """Undo all renames recorded in _swap_state.json (reverse order)."""
-    docs_dir = Path(docs_dir)
-    state_path = _state_path(docs_dir)
-
-    if not state_path.exists():
-        return  # no-op
-
-    try:
-        state = json.loads(state_path.read_text(encoding="utf-8"))
-    except (json.JSONDecodeError, OSError) as exc:
-        raise RuntimeError(
-            f"swap_sources: cannot read state file {state_path}: {exc}. "
-            f"Inspect or delete it manually."
-        ) from exc
-
-    version = state.get("version")
-    if version != STATE_VERSION:
-        raise RuntimeError(
-            f"swap_sources: state file version {version!r} does not match "
-            f"expected {STATE_VERSION!r}. Inspect {state_path} manually."
-        )
-
-    swaps = state.get("swaps", [])
-
-    for entry in reversed(swaps):
-        if not isinstance(entry, dict) or "md_from" not in entry or "md_to" not in entry:
-            raise RuntimeError(
-                f"swap_sources: malformed entry in {state_path}: {entry!r}. "
-                f"Inspect manually."
-            )
-        md_from = docs_dir / entry["md_from"]   # original source (md-prefixed)
-        md_to = docs_dir / entry["md_to"]        # current location (plain .md)
-        if md_to.exists():
-            os.rename(md_to, md_from)
-        else:
-            print(
-                f"swap_sources: WARNING — expected swapped file not found: {md_to}",
-                file=sys.stderr,
-            )
-
-    # Clean up state and exclude files
-    state_path.unlink(missing_ok=True)
-    exclude_path = _exclude_path(docs_dir)
-    exclude_path.unlink(missing_ok=True)
-
-    print(f"swap_sources: restored {len(swaps)} file(s).", file=sys.stderr)
-
-
-# ---------------------------------------------------------------------------
-# do_dry_run / do_status
-# ---------------------------------------------------------------------------
-
-def do_dry_run(docs_dir: Path) -> None:
-    """Print what would be swapped without making any changes."""
-    docs_dir = Path(docs_dir)
-    swap_list = parse_swap_list(docs_dir / SWAP_LIST_FILE)
-    if not swap_list:
-        print("(dry-run) No stems in swap list.")
-        return
-
-    for stem in swap_list:
-        md_from, md_to, rst_path = _resolve_stem_paths(docs_dir, stem)
-        issues = []
-        if not md_from.exists():
-            issues.append("md- source missing")
-        if not rst_path.exists():
-            issues.append("RST missing")
-        if md_to.exists():
-            issues.append("COLLISION: plain .md already exists")
-        if issues:
-            print(f"  SKIP  {stem}: {', '.join(issues)}")
-        else:
-            print(f"  SWAP  {md_from.name} → {md_to.name}  (in {md_from.parent.relative_to(docs_dir) if md_from.parent != docs_dir else '.'})")
-
-
-def do_status(docs_dir: Path) -> None:
-    """Show current swap state."""
-    docs_dir = Path(docs_dir)
-    state_path = _state_path(docs_dir)
-    if not state_path.exists():
-        print("swap_sources: no active swap state.")
-        return
-
-    state = json.loads(state_path.read_text(encoding="utf-8"))
-    swaps = state.get("swaps", [])
-    print(f"swap_sources: {len(swaps)} file(s) currently swapped:")
-    for entry in swaps:
-        print(f"  {entry['md_from']} → {entry['md_to']}  (excludes {entry['rst_excluded']})")
-
-
-# ---------------------------------------------------------------------------
-# CLI
-# ---------------------------------------------------------------------------
-
-def main(argv=None):
-    parser = argparse.ArgumentParser(
-        description="Swap md-prefixed MyST files in place of RST files before Sphinx builds."
-    )
-    group = parser.add_mutually_exclusive_group(required=True)
-    group.add_argument("--swap", action="store_true", help="Perform swap")
-    group.add_argument("--restore", action="store_true", help="Restore original files")
-    group.add_argument("--dry-run", action="store_true", help="Show what would be swapped")
-    group.add_argument("--status", action="store_true", help="Show current swap state")
-
-    parser.add_argument(
-        "--docs-dir",
-        type=Path,
-        default=None,
-        help="Path to docs/ directory (default: auto-detected from script location)",
-    )
-
-    args = parser.parse_args(argv)
-
-    if args.docs_dir is None:
-        # Default: repo_root/docs where repo_root = parent of scripts/
-        repo_root = Path(__file__).resolve().parent.parent
-        docs_dir = repo_root / "docs"
-    else:
-        docs_dir = args.docs_dir.resolve()
-
-    if not docs_dir.is_dir():
-        parser.error(f"docs directory not found: {docs_dir}")
-
-    if args.swap:
-        do_swap(docs_dir)
-    elif args.restore:
-        do_restore(docs_dir)
-    elif args.dry_run:
-        do_dry_run(docs_dir)
-    elif args.status:
-        do_status(docs_dir)
-
-
-if __name__ == "__main__":
-    main()